Receiving-hopper for metal scraps filings.



Y M. A. CHERTOK.

RECEIVING HOPPER FOR METAL SCRAPS AND HLINGS.

APPLICATION FILED DEC-8. 191's.

1 ,27 5,847 Patented Aug". 13, 1918.

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To all whom/it may concern. in, t a a Be it known thatl, MosnsA. CHERTOK, a citizen lot the United States, residingat RoX- bury; in the countyof Suii'olk and State-"of Massachusetts, haveinvented a new and useful Receiving-Hopper for Metal Scraps and Filings, of which the following is a specifica tion. f

This invention relates to receiving hoppers used in connection with working tools or apparatus of the rotary type, as forexample,

the workingwof preciousmetals, thekhopper collects the metal filings or dust yielding therefrom andretainsthe same sothat it may be reclaimed by the operator,thus naburally resulting 1 ina saving instead of a Waste,.as is otherwisethe case without the useo fsaidhopperh a a 1T0 illustrate my inventionl have shown in the drawing one i of its many; embodiments wherein it is applied to thehand-pieceof a dental engine which" is usedmore particu larly by dentists forgrinding orpolishing crowns, bridges, pivots, etc.,all of which are i ground to size.

hand-piece and: in thefi process of being Fig. 2 represents a view taken on.jline 2 -2 in Fig. l lookinginthedirection of the arrows. 1 r

Fig. 3 represents a sectionalxview takenon line3--.3, Fig. 1, looking in the direction of thearrows." i a i Fig. 4t represents an: view talren (on line H, 1,looki11ginthe direction of the arrows, showing the engaging slot of the sp c fi n nj ate, Patented Aug. 13, 1913; Applicationflled December aims; tra s. 135,805; it i stein of lthe hopper whichdisengagingly ins ofithervhand-piece; 1 i i. a

5 represents a' sectional view taken on line in Fig. at looking in the direc- .tion of the arrows,and representing a modi-' terlocks the hopper withthe projecting stud 6 1 fiedtypeuof hopper stem .whichis made .in-

arate shown in Fig.11.

tegral with the-hopper itself, instead of sep- Fi '16 represents an elevational 1 View showing: the devicesupplied with a flexible cot in the thumb opening: of the hopper. Figl'? represents amodifiedjtype ofhopper in that the same consistsof a. rigid trame-ni'emberwfor the hopper which is supplied withvautransparent shield. for; opening the view of theginterior ofthehopperto the s p rat r y p p l Thete 'm sgemployed hereln are used in the generic and dBSQIlPlJlYQ sense and therefore arenot intended primarily as tern si of limi- Like numerals parts through outthe several views of thedrawing. a

The numeral 3 10 in its entirety represents a receivinglhopper which is preferably made of transparent material, such as transparent celluloid, glass or gthe. like, and is provided with the side or workropening through which the work, as; the crown 12, may be inserted and brought into Working engage mer t with the working member, as for example thas ind ns W el .13. was han piece liound commonly.employed with socalled dental engines. Thehopper. 10 may provided with the integral type of stem 15,,Fig. 5, or the separate type 16 Fig. 1, which,in either case, is provided with the bepin, some instances made flexible or resilient, if found advantageous, for gripping purposes or the like. The. outer end thereof is preterably Iprovidedlwith the flan e 18 wl ieh iprojects to form a ridge for the getttl e res stor to en wi a e length of the stem maybe mfade to accomwas o e. n re e p t e st finger oflthehandshownin Fig. l, orfmay .tha t n fin f de ed-f I if ewe t; 1 1 fits ta e n t 10 handa be: extended hey'ond to accommodate more Itw'iu be amid that great ma esty 6r the dental hand-pieces are Constructed with a pro ecting-stud 19' (Fig.1), which in con nection with my device may serve vas a retaining member "for the same, and therefore the stem, of the sameis preferably provided with the longitudinal-'slot'20 and the annular-slot 21 which are madeofa width sufli cient to permit the engagement of the hopper-stem with said projecting-stud'19r rFor-usein the dental field, where a great l deal of work is done by the operator with theh andspiece of the dental engine as shown lIL-Flg. 1, thehopper 10 is preferably profvided with the thumb opening 22 which allows for the insertion of the thumb of the hand: holding the hand-piece, as shown in I overlappingend 24:, which end maybe permanentlysecured by any suitable means to the hopper. fThecot 23 maybe made flexible, as (if-rubber or fabric if desired, or of any other such suitable material, to permit the thumb to manipulate within the hopper, the purpose of the cot-being used to completely iclos'ethe opening 22 in the-hopper so that no opportunity j is given for the metal particles to pass out through said opening around'the thumb when inserted'ltherein; as when a large'opening'is used inasmaller dimensioned hopper, which reaches into the through section'of theahopperf In Fig 3, 25. represents. a' 7 flexible washer made of rubber, or any other such suitable material, which may be permanently secured to the'thumbopening of the hopper in any suitable Zinamier and through "which the thumb maybe inserted into the hopper, and thus provides for a complete inclosure around the thumb which will positively prevent the particles-within the hopper from escaping therethrough' while the tool is in ac tion. 7

In Fig/7, 26 represents a; rigidframemember which f-isf preferably j supplied (with theintegral type of stem 27 and may be pro- ,vided {with the. thumb opening 28, to which rrameeniemb r is secured the annular shield 29 which is preferably transp arent and may be, made i of celluloid or glass, according as gbe ,klesired, and iisj held secured with said framfl loember 26' by suitablerigid ringmeinb'er Ofwhi'chis bolted as by; 31, or otherwise suitably fsecured with 'tlre frame membier-126 for properly; supporting said shield member-"29 therewith lit being here lnoted th t said-e ter r ne m ebe" Tbsi e integral with said frame-member 26 and will therefore require supporting sections or arms which will take the place of the bolts 31 '(Figl7) and therefore will permit of the .use of sectional transparent windows or plates to be inserted between the arms of the frame instead ofwtheannular shield member 29 shown in said Fig. 7.

Having thus described the parts of my invention as applied to a dental hand-piece which illustrates but one of the embodiments thereof and without being limited thereto, the manner in which the same may be employed therewith is asfollows The hopper is positioned on the handpiece 14: and may be preferably freely fitted thereupon to allow an annular movement thereof, as may berequired by the manipulationof the thumb within the same; and. for that reason the annular-slot 21 is provided in the stem of the hopper so that such motion may be allowed where the pr0jectingstud 19 is found on the hand-piece 14:. With the hopper thus set with the hand-piece 14 in workingrelation therewith, the operator is thus enabledto take hold of the handpiece with the holding-hand A and preferably allows part of the hand to engage with the stem of the hopper, as shown in Fig. l. The thumb T is then inserted through the opening 22 and is brought in range with the work, as the crown 12shown in Figs. land 2, which is held by thefingersF and T of the other hand 13, which enter within the hopper through the opening 11 and support the work in relation to the working-member of the hand-piece in exactly, the same manner-as'would ordinarily bethe case if the hopper-were not there, and so it will be observed that with the transparent hopper the operator possesses a full'viewof the work and the operation being performed thereupon, and is not restricted by the hopperin his manipulation of the workorthe working-member therein;- also that the function of thehopper is to catch and hold withinit the particles of metal-scraps and .filings yielding from the grinding, drilling or polishing process applied .to the more precious metals, which particles ordinarily are otherwise lost and wasted, and therefore by providing a a suitable troughlike chamber within the hopper the same will accommodate any reasonable amount of such particles within it which can be readily reclaimed by the operator and thus results in a great saving of precious metal which is otherwise lost and wasted.

It may also be observed that the device is simple in; construction and cheap .to manufacture, and may be readily attached ordetached from the hand-piece and does not at all interfere with the working operation thereof when-attached thereto. Also, the

hopper may be permanently or detachably secured to a lathe or any other apparatus used in a laboratory or shop, for serving the same purpose, namely, tocollect particles or scraps worked off from the object by the tool or instrument with which the hopper is associated for reclaiming purposes,the same being especially useful in the manufacture of jewelry as well as in the dental art referred to.

While the preferred embodiments of my invention have been described in detail, it will be understood that I do not wish to be limited to the particular construction set forth, since various changes in the form, material, proportions, and arrangement of parts, and in the details of construction may be resorted to without departing from the spirit and scope of the invention, or destroying any of the advantages contained in the same, heretofore described and defined in the subjoined claims.

What I claim is 1. In a receiving hopper of the character described, a transparent hood-member surrounding the working tool on all sides provided with a retaining trou h; and means for engaging the same with t e working element associated therewith.

2. In a receiving hopper of the character described, an annular transparent hopper member forming a troughlike compartment therein, provided with an opening for the insertion of the work within the hopper; and an auxiliary opening for the insertion of the operators finger in the hopper; and means for engaging said hopper member with the instrument or apparatus with which the same is to be associated.

3. In a receiving hopper of the character described, an annular transparent hopper member forming a troughlike compartment therein, provided with a main opening for the insertion of the work within the hopper and an auxiliary opening for the insertion of the operators finger therein; a yielding washer member adapted to be secured about said auxiliary opening; and means for engaging said hopper member with the instrument or apparatus with which the same is to be associated.

MOSES A. OHERTOK.

copies 0! this patent may be obtained for five cents each, by addressing the Goinmissioner of Patents,

Washington, D. G." i 

